freeway not much better. 8 80 at the marina boulevard exit was a wet gray mess. heavy rain obscured the view of drivers creating a constant wave of stop and go traffic and sea of brake lights. this accident was one of many we witnessed in the span of only 2 hours. low lying spots on the highway often flood quickly. increasing road hazard for drivers and new set of challenges for the crew assigned to keep the freeway and storm drains clear of all obstruction. >> we have to make sure that they are not being plugged by either mud or leaves or by litter. >>reporter: with more than 300 camera across the 9 counties in the bay area cal-trans has had a busy day monitoring traffic. the red color.indicate problem areas where traffic is stopped. flooding closed highway 12 mud slide at highway 84 in fremont brought traffic to stand still. >> we find out what the problems as quickly as possible to dispatch the right people and the right equipment. >>reporter: chp responded quickly to the accident on westbound 5 80 and believe the driver may have been going too fast for weathe